51887023 has 4 divisors (see below), whose sum is σ = 51918568. Its totient is φ = 51855480.

The previous prime is 51886999. The next prime is 51887029. The reversal of 51887023 is 32078815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51887023 - 2²⁵ = 18332591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51887023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51887029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13161 + ... + 16642.

It is an arithmetic number, because the mean of its divisors is an integer number (12979642).

Almost surely, 2^51887023 is an apocalyptic number.

51887023 is a deficient number, since it is larger than the sum of its proper divisors (31545).

51887023 is a wasteful number, since it uses less digits than its factorization.

51887023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31544.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 51887023 is about 7203.2647459329. The cubic root of 51887023 is about 372.9806069167.

The spelling of 51887023 in words is "fifty-one million, eight hundred eighty-seven thousand, twenty-three".